"Web search services that don't require an API key" matching MCP connectors:

Win probabilities for 13 sports: NFL, NBA, soccer, tennis, golf, cricket. No API key, no signup.

Polymarket, Manifold, Metaculus compared: one fair probability per question. No API key needed.

Measured share of answer for 24 crypto and Web3 brands. An open dataset, not an audit of your site.

Measured share of answer for 20 SaaS brands. An open dataset, not an audit of your site.

500+ pay-per-call tools + skill packs. USDC + USDG on 12 chains, or free via proof-of-work.

DXF and PDF/X-4 for AI agents: structured facts, PNG renders, an interactive in-chat viewer.

Reference data for prediction markets: graded resolution clarity, cross-venue links, provenance.

Australian AI governance framework mapped to the Privacy Act and sector laws your AI use triggers.

Neutral freight reference + validation layer for AI agents: ADR, HS, UN/LOCODE, freight math

Read-only MCP server for the OrchestKit docs: full-text search + Markdown fetch. No auth.

Host-owned vacation-rental direct booking via VRP. Signed offers, 0% commission. Not an OTA.

Exit-cost estimates, depth concentration, liquidity tiers, and sealed records; no commodity futures.

Read-only breach intel, full history 2007-today: reports THAT an org was breached, never the data.

Fourteen paid x402 and MPP tools for web data, payment preflight, audits, DeFi, and work discovery.

SSRF-safe web intelligence: 4 outcomes, 43 paid x402 tools, 3 free tools and a URL preview.

The Brain Layer for AI Trading Agents — quant calls + cross-venue arb across perp venues via MCP.

US funding-stress warning with construction-PIT evidence limits and explicit eligibility flags.

Free real-estate underwriting, no key or account. 6 strategies, stress tests, max offer.

Dedicated static outbound IPv4 over WireGuard. Free 7-day trial, no card, no sales call.

Finds real, maintained open-source repos that fit your project. MCP grounding for coding agents.